Structural Timber System for Medium-to-Long Spans: The HB System RevisitedSource: Journal of Architectural Engineering:;2024:;Volume ( 030 ):;issue: 002::page 04024008-1DOI: 10.1061/JAEIED.AEENG-1687Publisher: ASCE
Abstract: The evolution of long-span timber structures during the last centuries has been driven by technological developments that are associated with materials, joints, and manufacturing. Many extraordinary structural solutions have been developed, some of which have been very advanced in their time and have been replaced by new ones, typically because of the advent of new manufacturing methods or, at times, due to new technological innovations. This study examines the Hilding Brosenius (HB) system, which was developed in the 1940s as a versatile wooden frame solution for medium-to-long spans. The HB system is based on an I-shaped cross section where the web consists of two diagonal board layers, and the flanges are assembled from boards by nailing and gluing. This study presents and discusses the main structural components of the system from the perspective of structural mechanics, current design requirements, and manufacturing technologies. As a practical application example, the structural system will be examined in the renovation project of an HB portal frame from the 1950s. The main findings of this study are: (1) the HB system has certain features that would make it worthwhile modernizing and reusing it more widely; and (2) the HB system design principles lead to a safe and robust yet light and optimal structure.
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contributor author | Sami Pajunen | |
contributor author | Roberto Crocetti | |
contributor author | Xan Browne | |
date accessioned | 2024-04-27T22:41:08Z | |
date available | 2024-04-27T22:41:08Z | |
date issued | 2024/06/01 | |
identifier other | 10.1061-JAEIED.AEENG-1687.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4297254 | |
description abstract | The evolution of long-span timber structures during the last centuries has been driven by technological developments that are associated with materials, joints, and manufacturing. Many extraordinary structural solutions have been developed, some of which have been very advanced in their time and have been replaced by new ones, typically because of the advent of new manufacturing methods or, at times, due to new technological innovations. This study examines the Hilding Brosenius (HB) system, which was developed in the 1940s as a versatile wooden frame solution for medium-to-long spans. The HB system is based on an I-shaped cross section where the web consists of two diagonal board layers, and the flanges are assembled from boards by nailing and gluing. This study presents and discusses the main structural components of the system from the perspective of structural mechanics, current design requirements, and manufacturing technologies. As a practical application example, the structural system will be examined in the renovation project of an HB portal frame from the 1950s. The main findings of this study are: (1) the HB system has certain features that would make it worthwhile modernizing and reusing it more widely; and (2) the HB system design principles lead to a safe and robust yet light and optimal structure. | |
publisher | ASCE | |
title | Structural Timber System for Medium-to-Long Spans: The HB System Revisited | |
type | Journal Article | |
journal volume | 30 | |
journal issue | 2 | |
journal title | Journal of Architectural Engineering | |
identifier doi | 10.1061/JAEIED.AEENG-1687 | |
journal fristpage | 04024008-1 | |
journal lastpage | 04024008-10 | |
page | 10 | |
tree | Journal of Architectural Engineering:;2024:;Volume ( 030 ):;issue: 002 | |
contenttype | Fulltext |